Compliance record
Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.
| Violation | Type | Status | Period |
|---|---|---|---|
| TT | Health-based | Unaddressed | 2024-10-17 |
| MCL | Health-based | Resolved | 2015-10-01 → 2015-12-31 |
| MCL | Health-based | Resolved | 2015-10-01 → 2015-12-31 |
| MCL | Health-based | Resolved | 2010-04-01 → 2010-04-30 |
| MCL | Health-based | Resolved | 2010-04-01 → 2010-04-30 |
| MCL | Health-based | Resolved | 2009-06-01 → 2009-06-30 |
| MCL | Health-based | Resolved | 2009-06-01 → 2009-06-30 |
| MCL | Health-based | Resolved | 2007-07-01 → 2007-07-31 |
| MCL | Health-based | Resolved | 2007-07-01 → 2007-07-31 |
| MCL | Health-based | Resolved | 2007-04-01 → 2007-06-30 |
PFAS detected
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Nitrate | 9500 µg/L 95% of the EPA limit 10000 µg/L
worst single sample: 12000 µg/L | 750/754 | SYR4 | 2012–2019 |
| Arsenic | 15 µg/L 150% of the EPA limit, at the 95th percentile of samples — 10 µg/L
worst single sample: 24 µg/L | 664/672 | SYR4 | 2012–2019 |
| Combined Uranium | 40.23 µg/L 134% of the EPA limit, at the 95th percentile of samples — 30 µg/L
worst single sample: 53.64 µg/L | 366/367 | SYR4 | 2012–2019 |
| Bromoform | 6.93 µg/L No EPA limit set
worst single sample: 9.6 µg/L | 78/130 | SYR4 | 2012–2019 |
| TTHM | 9.24 µg/L 12% of the EPA limit 80 µg/L
worst single sample: 12 µg/L | 65/130 | SYR4 | 2012–2019 |
| Dibromochloromethane | 2.53 µg/L No EPA limit set
worst single sample: 3.2 µg/L | 47/130 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 60.25 µg/L 100% of the EPA limit, at the 95th percentile of samples — 60 µg/L
worst single sample: 68 µg/L | 46/87 | SYR4 | 2013–2019 |
| Barium | 211 µg/L 11% of the EPA limit 2000 µg/L
worst single sample: 430 µg/L | 40/40 | SYR4 | 2012–2019 |
| Tetrachloroethylene | 6 µg/L 120% of the EPA limit, at the 95th percentile of samples — 5 µg/L
worst single sample: 7.3 µg/L | 36/81 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 35/35 | LCR | 2023 |
| Fluoride | 140 µg/L 3.5% of the EPA limit 4000 µg/L
worst single sample: 250 µg/L | 29/41 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 2.48 µg/L No EPA limit set
worst single sample: 2.7 µg/L | 25/83 | SYR4 | 2013–2019 |
| Trichloroacetic Acid | 63.7 µg/L No EPA limit set
worst single sample: 68 µg/L | 23/87 | SYR4 | 2013–2019 |
| 1,2-DIBROMO-3-CHLOROPROPANE | 0.1431 µg/L 72% of the EPA limit 0.2000 µg/L
worst single sample: 0.1800 µg/L | 10/58 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 954500 µg/L 9545% of the EPA limit, at the 95th percentile of samples — 10000 µg/L
worst single sample: 1000000 µg/L | 8/9 | SYR4 | 2013–2017 |
| Selenium | 5.2 µg/L 10% of the EPA limit 50 µg/L
worst single sample: 5.7 µg/L | 6/40 | SYR4 | 2012–2019 |
| Lithium | 15.7 µg/L No EPA limit set | 6/16 | UCMR-5 | 2025 |
| Monochloroacetic Acid | 22.435 µg/L No EPA limit set
worst single sample: 25 µg/L | 4/94 | SYR4 | 2013–2019 |
| Chloroform | 0.6100 µg/L No EPA limit set | 1/131 | SYR4 | 2012–2019 |
| Gross Beta Particle Activity | 9.6 pCi/L No EPA limit set | 1/1 | SYR4 | 2017 |
84 contaminants tested, none detected
Utility contact
Frequently asked questions about Ceres, City of
Is Ceres, City of tap water safe to drink?
EPA monitoring detected 27 contaminants in Ceres, City of's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.
What contaminants were detected in Ceres, City of's water?
EPA monitoring detected Nitrate, Arsenic, Combined Uranium, Bromoform, TTHM, and others. The full list with the level and data source for each is above.
How many people does Ceres, City of serve?
Ceres, City of reports serving 54,513 people in California, per its EPA record.
Has Ceres, City of had any water quality violations?
The EPA has 25 violations on file for Ceres, City of, of which 20 are health-based (a contaminant limit or required treatment was breached) and 2 remain open. The rest are monitoring or reporting failures.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.